地质年表自诞生以来,始终处于不断修正和完善的过程中,每隔几年就有新的年表问世。1982年,Harland等和Odin等的两份年表几乎同时发表。在最近五、六年内,地层学和地质年代学的研究工作又有许多新进展。1987年8月,国际地质联合会(IUGS)下设的地质年代学分会主席N.J.Snelling提出了一份新的地质年表。由于地质年表与各个地质专业的研究都有密切关系,是大家共同关心的问题,特将该年表转载于表1并做少许介绍: Geological chronology since its inception, has always been in constant revision and improvement of the process, every few years there are new chronology come out. In 1982, two chronologies, Harland et al. And Odin et al., Were published almost simultaneously. In the last five or six years, many new advances have been made in the research of stratigraphy and geochronology. In August 1987, N.J.Snelling, president of the Geochronology Unit under the International Geological Union (IUGS), presented a new geological chronology. Because the geochronology is closely related to the research of various geological disciplines, it is a matter of common concern to all. The special chronology is reproduced in Table 1 and introduced a little: